C#

public Country(string cAbs, string cName)
{
    this._country = cName;
    this._abs = cAbs;
}

private void btnOk_Click(object sender, EventArgs e)
        {
            Country myCountry = new Country();

            CountryList countries = new CountryList();

            countries.Add(new Country("AE", "United Arab Emirates"));
            countries.Add(new Country("AF", "Afghanistan"));
            countries.Add(new Country("AQ", "Antarctica"));
            countries.Add(new Country("AR", "Argentina"));
            countries.Add(new Country("AT", "Austria"));
            countries.Add(new Country("AU", "Australia"));
            countries.Add(new Country("BD", "Bangladesh"));
            countries.Add(new Country("BE", "Belgium"));
            countries.Add(new Country("BR", "Brazil"));
            countries.Add(new Country("BS", "Bahamas"));
            countries.Add(new Country("CA", "Canada"));
            countries.Add(new Country("CH", "Switzerland"));
            countries.Add(new Country("CL", "Chilie"));
            countries.Add(new Country("CM", "Cameroon"));
            countries.Add(new Country("CL", "Chilie"));
            countries.Add(new Country("CN", "China"));
            countries.Add(new Country("CO", "Columbia"));
            countries.Add(new Country("CR", "Costa Rica"));
            countries.Add(new Country("DK", "Denmark"));
            countries.Add(new Country("DM", "Dominica"));
            countries.Add(new Country("DO", "Domican Republic"));
            countries.Add(new Country("EC", "Ecuador"));
            countries.Add(new Country("EE", "Estonia"));
            countries.Add(new Country("EG", "Egypt"));
            countries.Add(new Country("ES", "Spain"));
            countries.Add(new Country("ET", "Ethiopia"));
            countries.Add(new Country("EU", "European Union"));

            //CountryList country = countries.Where(f=> f.CountryAbreviation == this.textBox1.Text)  

            //Country country = countries.Where(f => f.CountryAbreviation == this.textBox1.Text).OrderByDescending(f => f.CountryAbreviation).FirstOrDefault();
                       
        }

[DllImport("kernel32.dll", EntryPoint = "SetSystemTime", SetLastError = true)]
public extern static bool Win32SetSystemTime(ref SystemTime sysTime);